print.c revision 61323 
1/*
2 * Copyright (c) 1989, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Michael Fischbein.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)print.c	8.4 (Berkeley) 4/17/94";
40#else
41static const char rcsid[] =
42  "$FreeBSD: head/bin/ls/print.c 61323 2000-06-06 07:19:50Z ache $";
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47#include <sys/stat.h>
48
49#include <err.h>
50#include <errno.h>
51#include <fts.h>
52#include <grp.h>
53#include <pwd.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <string.h>
57#include <time.h>
58#include <unistd.h>
59#ifdef COLORLS
60#include <ctype.h>
61#include <termcap.h>
62#include <signal.h>
63#endif
64
65#include "ls.h"
66#include "extern.h"
67
68static int	printaname __P((FTSENT *, u_long, u_long));
69static void	printlink __P((FTSENT *));
70static void	printtime __P((time_t));
71static int	printtype __P((u_int));
72#ifdef COLORLS
73static void     endcolor __P((int));
74static int      colortype __P((mode_t));
75#endif
76
77#define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
78
79#ifdef COLORLS
80/* Most of these are taken from <sys/stat.h> */
81typedef enum Colors {
82    C_DIR,     /* directory */
83    C_LNK,     /* symbolic link */
84    C_SOCK,    /* socket */
85    C_FIFO,    /* pipe */
86    C_EXEC,    /* executable */
87    C_BLK,     /* block special */
88    C_CHR,     /* character special */
89    C_SUID,    /* setuid executable */
90    C_SGID,    /* setgid executable */
91    C_WSDIR,   /* directory writeble to others, with sticky bit */
92    C_WDIR,    /* directory writeble to others, without sticky bit */
93    C_NUMCOLORS        /* just a place-holder */
94} Colors ;
95
96char *defcolors = "4x5x2x3x1x464301060203";
97
98static int colors[C_NUMCOLORS][2];
99#endif
100
101void
102printscol(dp)
103	DISPLAY *dp;
104{
105	FTSENT *p;
106
107	for (p = dp->list; p; p = p->fts_link) {
108		if (IS_NOPRINT(p))
109			continue;
110		(void)printaname(p, dp->s_inode, dp->s_block);
111		(void)putchar('\n');
112	}
113}
114
115void
116printlong(dp)
117	DISPLAY *dp;
118{
119	struct stat *sp;
120	FTSENT *p;
121	NAMES *np;
122	char buf[20];
123#ifdef COLORLS
124	int color_printed = 0;
125#endif
126
127	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
128		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
129
130	for (p = dp->list; p; p = p->fts_link) {
131		if (IS_NOPRINT(p))
132			continue;
133		sp = p->fts_statp;
134		if (f_inode)
135			(void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino);
136		if (f_size)
137			(void)printf("%*qd ",
138			    dp->s_block, howmany(sp->st_blocks, blocksize));
139		(void)strmode(sp->st_mode, buf);
140		np = p->fts_pointer;
141		(void)printf("%s %*u %-*s  %-*s  ", buf, dp->s_nlink,
142		    sp->st_nlink, dp->s_user, np->user, dp->s_group,
143		    np->group);
144		if (f_flags)
145			(void)printf("%-*s ", dp->s_flags, np->flags);
146		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
147			if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0)
148				(void)printf("%3d, 0x%08x ",
149				    major(sp->st_rdev),
150				    (u_int)minor(sp->st_rdev));
151			else
152				(void)printf("%3d, %3d ",
153				    major(sp->st_rdev), minor(sp->st_rdev));
154		else if (dp->bcfile)
155			(void)printf("%*s%*qd ",
156			    8 - dp->s_size, "", dp->s_size, sp->st_size);
157		else
158			(void)printf("%*qd ", dp->s_size, sp->st_size);
159		if (f_accesstime)
160			printtime(sp->st_atime);
161		else if (f_statustime)
162			printtime(sp->st_ctime);
163		else
164			printtime(sp->st_mtime);
165#ifdef COLORLS
166		if (f_color)
167			color_printed = colortype(sp->st_mode);
168#endif
169		if (f_octal || f_octal_escape) (void)prn_octal(p->fts_name);
170		else (void)printf("%s", p->fts_name);
171#ifdef COLORLS
172		if (f_color && color_printed)
173			endcolor(0);
174#endif
175		if (f_type)
176			(void)printtype(sp->st_mode);
177		if (S_ISLNK(sp->st_mode))
178			printlink(p);
179		(void)putchar('\n');
180	}
181}
182
183void
184printcol(dp)
185	DISPLAY *dp;
186{
187	extern int termwidth;
188	static FTSENT **array;
189	static int lastentries = -1;
190	FTSENT *p;
191	int base, chcnt, cnt, col, colwidth, num;
192	int endcol, numcols, numrows, row;
193	int tabwidth;
194
195	if (f_notabs)
196		tabwidth = 1;
197	else
198		tabwidth = 8;
199
200	/*
201	 * Have to do random access in the linked list -- build a table
202	 * of pointers.
203	 */
204	if (dp->entries > lastentries) {
205		lastentries = dp->entries;
206		if ((array =
207		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
208			warn(NULL);
209			printscol(dp);
210		}
211	}
212	for (p = dp->list, num = 0; p; p = p->fts_link)
213		if (p->fts_number != NO_PRINT)
214			array[num++] = p;
215
216	colwidth = dp->maxlen;
217	if (f_inode)
218		colwidth += dp->s_inode + 1;
219	if (f_size)
220		colwidth += dp->s_block + 1;
221	if (f_type)
222		colwidth += 1;
223
224	colwidth = (colwidth + tabwidth) & ~(tabwidth - 1);
225	if (termwidth < 2 * colwidth) {
226		printscol(dp);
227		return;
228	}
229
230	numcols = termwidth / colwidth;
231	numrows = num / numcols;
232	if (num % numcols)
233		++numrows;
234
235	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
236		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
237	for (row = 0; row < numrows; ++row) {
238		endcol = colwidth;
239		for (base = row, chcnt = col = 0; col < numcols; ++col) {
240			chcnt += printaname(array[base], dp->s_inode,
241			    dp->s_block);
242			if ((base += numrows) >= num)
243				break;
244#ifdef COLORLS
245			/*
246			 * some terminals get confused if we mix tabs
247			 * with color sequences
248			 */
249			if (f_color)
250				while ((cnt = (chcnt + 1)) <= endcol) {
251					(void)putchar(' ');
252					chcnt = cnt;
253				}
254			else
255#endif
256			while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1)))
257			    <= endcol){
258				(void)putchar(f_notabs ? ' ' : '\t');
259				chcnt = cnt;
260			}
261			endcol += colwidth;
262		}
263		(void)putchar('\n');
264	}
265}
266
267/*
268 * print [inode] [size] name
269 * return # of characters printed, no trailing characters.
270 */
271static int
272printaname(p, inodefield, sizefield)
273	FTSENT *p;
274	u_long sizefield, inodefield;
275{
276	struct stat *sp;
277	int chcnt;
278#ifdef COLORLS
279	int color_printed = 0;
280#endif
281
282	sp = p->fts_statp;
283	chcnt = 0;
284	if (f_inode)
285		chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino);
286	if (f_size)
287		chcnt += printf("%*qd ",
288		    (int)sizefield, howmany(sp->st_blocks, blocksize));
289#ifdef COLORLS
290	if (f_color)
291		color_printed = colortype(sp->st_mode);
292#endif
293	chcnt += (f_octal || f_octal_escape) ? prn_octal(p->fts_name)
294	                                     : printf("%s", p->fts_name);
295#ifdef COLORLS
296	if (f_color && color_printed)
297		endcolor(0);
298#endif
299	if (f_type)
300		chcnt += printtype(sp->st_mode);
301	return (chcnt);
302}
303
304static void
305printtime(ftime)
306	time_t ftime;
307{
308	int i;
309	char longstring[80];
310	static time_t now;
311
312	if (now == 0)
313		now = time(NULL);
314
315	strftime(longstring, sizeof(longstring), "%c", localtime(&ftime));
316	for (i = 4; i < 11; ++i)
317		(void)putchar(longstring[i]);
318
319#define	SIXMONTHS	((365 / 2) * 86400)
320	if (f_sectime)
321		for (i = 11; i < 24; i++)
322			(void)putchar(longstring[i]);
323	else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
324		for (i = 11; i < 16; ++i)
325			(void)putchar(longstring[i]);
326	else {
327		(void)putchar(' ');
328		for (i = 20; i < 24; ++i)
329			(void)putchar(longstring[i]);
330	}
331	(void)putchar(' ');
332}
333
334static int
335printtype(mode)
336	u_int mode;
337{
338	switch (mode & S_IFMT) {
339	case S_IFDIR:
340		(void)putchar('/');
341		return (1);
342	case S_IFIFO:
343		(void)putchar('|');
344		return (1);
345	case S_IFLNK:
346		(void)putchar('@');
347		return (1);
348	case S_IFSOCK:
349		(void)putchar('=');
350		return (1);
351	case S_IFWHT:
352		(void)putchar('%');
353		return (1);
354	}
355	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
356		(void)putchar('*');
357		return (1);
358	}
359	return (0);
360}
361
362#ifdef COLORLS
363static int
364putch(c)
365	int c;
366{
367	(void) putchar(c);
368	return 0;
369}
370
371static int
372writech(c)
373	int c;
374{
375	char tmp = c;
376
377	(void) write(STDOUT_FILENO, &tmp, 1);
378	return 0;
379}
380
381static void
382printcolor(c)
383       Colors c;
384{
385	char *ansiseq;
386
387	if (colors[c][0] != -1) {
388		ansiseq = tgoto(ansi_fgcol, 0, colors[c][0]);
389		if (ansiseq)
390			tputs(ansiseq, 1, putch);
391	}
392
393	if (colors[c][1] != -1) {
394		ansiseq = tgoto(ansi_bgcol, 0, colors[c][1]);
395		if (ansiseq)
396			tputs(ansiseq, 1, putch);
397	}
398}
399
400static void
401endcolor(sig)
402	int sig;
403{
404	tputs(ansi_coloff, 1, sig ? writech : putch);
405}
406
407static int
408colortype(mode)
409       mode_t mode;
410{
411	switch(mode & S_IFMT) {
412	      case S_IFDIR:
413		if (mode & S_IWOTH)
414		    if (mode & S_ISTXT)
415			printcolor(C_WSDIR);
416		    else
417			printcolor(C_WDIR);
418		else
419		    printcolor(C_DIR);
420		return(1);
421	      case S_IFLNK:
422		printcolor(C_LNK);
423		return(1);
424	      case S_IFSOCK:
425		printcolor(C_SOCK);
426		return(1);
427	      case S_IFIFO:
428		printcolor(C_FIFO);
429		return(1);
430	      case S_IFBLK:
431		printcolor(C_BLK);
432		return(1);
433	      case S_IFCHR:
434		printcolor(C_CHR);
435		return(1);
436	}
437	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
438		if (mode & S_ISUID)
439		    printcolor(C_SUID);
440		else if (mode & S_ISGID)
441		    printcolor(C_SGID);
442		else
443		    printcolor(C_EXEC);
444		return(1);
445	}
446	return(0);
447}
448
449void
450parsecolors(cs)
451char *cs;
452{
453	int i, j, len;
454	char c[2];
455
456	if (cs == NULL)    cs = ""; /* LSCOLORS not set */
457	len = strlen(cs);
458	for (i = 0 ; i < C_NUMCOLORS ; i++) {
459		if (len <= 2*i) {
460			c[0] = defcolors[2*i];
461			c[1] = defcolors[2*i+1];
462		}
463		else {
464			c[0] = cs[2*i];
465			c[1] = cs[2*i+1];
466		}
467		for (j = 0 ; j < 2 ; j++) {
468			if ((c[j] < '0' || c[j] > '7') &&
469			    tolower((unsigned char)c[j]) != 'x') {
470				fprintf(stderr,
471					"error: invalid character '%c' in LSCOLORS env var\n",
472					c[j]);
473				c[j] = defcolors[2*i+j];
474			}
475			if (tolower((unsigned char)c[j]) == 'x')
476			    colors[i][j] = -1;
477			else
478			    colors[i][j] = c[j]-'0';
479		}
480	}
481}
482
483void
484colorquit(sig)
485	int sig;
486{
487	endcolor(sig);
488
489	(void) signal(sig, SIG_DFL);
490	(void) kill(getpid(), sig);
491}
492#endif /*COLORLS*/
493
494static void
495printlink(p)
496	FTSENT *p;
497{
498	int lnklen;
499	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
500
501	if (p->fts_level == FTS_ROOTLEVEL)
502		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
503	else
504		(void)snprintf(name, sizeof(name),
505		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
506	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
507		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
508		return;
509	}
510	path[lnklen] = '\0';
511	if (f_octal || f_octal_escape) {
512	        (void)printf(" -> ");
513	        (void)prn_octal(path);
514	}
515	else (void)printf(" -> %s", path);
516}
517